Why would my legs swell an hurts.and the stay cold.

?poor blood supply: As we get older, our heart has to work harder and our blood vessels get weary. Sometimes this leads to swelling of the legs. There are other possible causes also, but this is definitely a problem that should be investigated with your primary care physician. Don't just say to yourself it is a part of getting older, because it can be helped. If you can, put your feet up, like if watching tv.